Filling machine



Oct. 17, 1939.

A. BURNETT FILLING momma Filed Aug. 24, 1957 5 Sheets-Sheet 1Alxanderfizzmdt INVENTOR ATTORNEY Ocfll], 1939. v A, B T 2,176,121

FILLING MACHINE Filed Aug. 24, 1937 5 Sheets-Sheet 2 J AlexaydzrfiurnettLN lNV E N'I'OR ATTORNEY 5 Sheets-Sheet 3 Alexander Burnett ATTORNEY A.BURNETT FILLING MACHINE Filed Aug. 24, 1937 Oct. 17, 1939.

Oct. 17, 1939. A. BURNETT FILLING MACHINE 5 Sheets-Shet 4 Filed. Aug.24, 1937 Alexanderfiurnett INVENTOR m E HE: 5 WWW mm mm flu m Eula E 3uww Nw vm \HIIIIJIWA/MNIWI... I.|H

A TTEST- Wei/QM fiI CZM 'TORNEY Oct 17, 1939. A. BURNETT FILLING MACHINEFild Aug. 24, 1957 5 Sheets-sheet 5 A Zexandez fiui'nezt INVENT ORATTORNEY Patented Oct. 1 7 1939 FlCE . mnme momma Alexander Burnett,Chicago, Ill., assignor to Industrial Patents Corporation, Chicago,11]., a

corporation of Delaware Application August 24, 1937, Serial No. 160,719

2 Claims.

. This invention relates to a measuring and filling apparatus fordispensing predetermined amounts of liquid and semiliquid materials,such as oils and greases.

One of the objects of the invention is to provide an improved device fordispensing predetermined amounts of liquid and semiliquid materials,such as oils and greases.

Another object of the invention is to provide a measuring and fillingdevice having automatic means for feeding cartons to and from a fixeddischarge nozzle and for preventing the discharge of materials from thenozzle in the absence of a properly fed carton.

Another object of the invention is to provide a measuring and fillingdevice having a non-drip, non-spatter filling nozzle.

Other objects of the invention will be apparent from the description andclaims which follow.

In accordance with the present invention, cartons ready forfilling aresuccessively fed on an endless conveying means and into the receivingpockets of an intermittently movable rotatable turret for movementrelative to a discharge nozzle. With each movement of the turret, a,previously fed carton is moved into filling position relative to thenozzle and simultaneously a previously filled carton is moved by. theturret onto a discharge conveying means whence it is carried from themachine.

The nozzle of the present invention is adapted for movement toward andfrom the turret. The movements ofthe nozzle are eifected in synchronismwith the turret so that before filling of the carton the nozzle islowered relative'to the carton. The lowering of the nozzle minimizes thedrop of discharged material and thus prevents spattering of thematerial.

The nozzle, after each discharge, is raised from the carton andsimultaneously, through timely operation of a valve arrangement in themeasuring and discharge mechanism, suction is applied against thematerial remaining in the nozzle thus preventing dripping of thematerial between each filling of the cartons.

The device of the present invention employs a measuring device of theconventional cylinder and piston type. The actuating means of the nozzleand measuring device is controlled from a common shaft rotatably driventhrough the medium of a throwout clutch. The clutch is controlledthrough the medium of 1 a guard member mounted relative to the revolvingturret and adapted for movement into an empty pocket of the turret whenand as the empty pocket is moved and at its opposite end, is slidablymounted relative .to the filling nozzle. In the event a carton has'failed to feed to a pocket of the turret, the guard member ismoved intothe pocket as it approaches filling position therebyreleasing the clutchand preventing discharge of material from the nozzle.

Attention isdirected to the drawings in which like characters ofreference are used to designate similar elements.

Figure 1 is a plan view of a measuring and filling device constructed inaccordance with the present invention.

Figure 2 is a top view, partly in section, taken substantially on line2-2 of Figure 3, the turret and conveying means being shown in dottedlines.

Figure 3 is aside view, partly in section, taken substantially on line3-3 of Figure 2, parts being omitted.

Figure 4 is a side view, partly in section, taken substantially on-line44 of Figure 2.

Figure 5 is an enlarged detailed view, partly in section, of the turretmechanism.

Figure 6 is a view taken on line B6 of Figure 5.

Figure 7 is an enlarged view,-in perspective,

illustrating the clutch mechanism. In this figure the main clutch plateis shown removed from the other clutch elements.

Figure 8 is an enlarged detailed section, of the clutch assembly.

Figure 9 is a side view of the main clutch plate and drive sprocket.

The device of the present invention is mounted upon suitable framework lcomprising standards 2, 3, 4 and 5, cross members 6 and I, end members 8and Q, and top it.

Turret l l is provided with carton receiving pockets l2 and is rigidlysecured to tubular shaft view, partly in "it, the shaft l3 beingrotatably mounted in collar bearing l5 fixedly secured at opening it intop to. 'Drive plate It is rotatably secured on shaft I3 for movementrelative to ratchet member I! rigidly secured to shaft l3. Drive plateJ6 is provided with pawl l8 held in constant engagement with ratchet Wby spring l9. Plate 16 is oscillated on shaft it by reciprocating rod 20and, in turn, serves to intermittently rotate turret I! through themedium of ratchet I! and pawls I8. Rod 20 is pivoted at one end, as at2|, to plate IE on shaft '22 through slot 23. A

Shaft 22 is journaled in bearings 14 and 25 rigidly secured to crossmembers 6 and 1. Cam 26 is pinioned, 'or otherwise secured, to shaft 22.Rod 20 is held adjacent cam 26 by collar 21 rigidly secured to shaft 22.Rod 20,,at either side and 68 and clutch element 69.

of slot 23, is provided with roller bearings 28 and is reciprocallyoperated by rotation of cam 26 against the bearings 28.

Shaft 22 is continuously driven from shaft 29 through the medium ofchain 36 and sprockets 3| and 32. Shaft 29 isjournaled in suitablebearings 33 rigidly secured, as by brackets 34, to the under surface oftop I6, and is continuously driven by power transmitted from motor 35through the medium of gear box 36, chain 31 and sprockets 36 and 39.

As shown in Figure 1, empty cartons 46 are fed one after the other onendless conveying belt 4I and into pockets I2 of turret Il. At eachmovement of turret II, the carton last fed from conveying belt 4| ismoved into filling position below discharge end 43 of nozzle 44 andsimultaneously the carton last filled is moved to a position from nozzle44 onto discharge conveyor 45 whence it is carried from the machine.

Conveying belt 4| is continuously driven on pulley 46 and conveyor belt45 is continuously driven on pulley 41. Each of the pulleys 46 and 41 isrigidly secured to shaft 29.

Guide rails 56 and are secured adjacent either side of the path definedby conveyors 4| and 45 and turret II for securing the cartons withintheir proper limits during travel through the machine. i

As shown in Figure 4, discharge nozzle 44 is reciprocally-mounted formovement relative to the pockets of turret II. The movements of nozzle44 are effected in synchronism with the movements of turret II so thatfollowing movement of each carton .into filling position, the nozzle islowered relative to the carton before discharge of the material into thecarton. The lowering of the nozzle minimizes the drop of the dischargedmaterial and thus prevents spattering of the material. After filling ofthe carton, the nozzle is raised relative to the carton prior to thenext movement of theturret.

Nozzle 44 is threaded, as at 52, to rod 53 slidably mounted in tubularshaft I3. Rod 53 is reciprocated through the medium of bell crank lever54 connected through the medium of rod 55 with drive shaft 56. Lever54'is pivoted, as at 51, on bracket 58 rigidly secured to end member 9.Rod 55 is pivoted at one end, as at 59, 'to lever 54 and at its otherend is mounted through slot 66 for slidable movement on shaft 56. Rod55, at either end of slot 66, is provided with bearing members 6|.Cam'62 rotates with shaft 56 and serves to reciprocate rod 55 throughengagement with bearing members 6|. Rod 55 is held adjacent cam 62 bycollar 63 pinioned on shaft 56.

Shaft 56 is journaled in bearing 64 rigidly secured to frame member 6and sleeve bearin 65 rigidly secured to frame member 1 and is adaptedfor continuous rotation. Power is trans-. mitted to shaft 56 from motor35 through the medium of gear box 36, chain 66, sprockets 61 Theoperation of clutch element 69 will be hereinafter more fully described.

As shown in Figures 1, 2 and 3, the material delivered through supplyline 18, which extends from a source-ofsupply not shown, is measured inpredetermined amounts in measuring device 1 I. The measured material isforced from measuring device 1I through flexible line 12 and nozzle 44in synchronism with the movement of G the cartons in turret II.

Measuring device 1| comprises cylinders 13 14 through lines and 14respectively provided with pistons 15 and 16 mounted for relativelyopposite movements. Piston 15 is rigidly secured to connecting rod 11mounted through opening 18 of cylinder 13. Connecting rod 11 ispivotally connected, as at 19, to drive rod 86, mounted as through slot8I for slidable movement on shaft 56. Reciprocal movement is imparted torod 86 and thus to rod 11 and'piston 15 through rotation of cam 82 inengagement with bearing members 83.

Piston 16 is secured to connecting rod 83 mounted through opening 84 incylinder 14. Rod 83 is pivotally connected, as at 85, to drive rod 86mounted, as through slot 81, for slidable movement on shaft 56.Reciprocal movement is imparted to rod 86 and thus to rod 83 and piston16 through rotation of cam 88 in engagement with bearings 89. It will benoted that cams 82 and 88 are mounted on shaft 56 so as to provide arelatively opposite movement of the pistons 15 and 16. It will be notedalso that when one of the pistons 15 and 16 is being moved in adirection to measure a supply of material the other of the pistons isbeing moved in a direction to discharge a previously measured supply ofmaterial.

It will be' seen further that through proper spacing of bearings 83 and89 relative to their respective cams 82 and 88 pistons 15 and 16 willmomentarily remain idle at each of their extreme movements. Thisidleness is timed to permit one complete movement of the turret betweeneach discharge of the material.

Material from supply line 16 is directed to cylinder 13 through lines 96and 9|, the line 9| being provided with shutoff valve 92 operablethrough rod 93 by movement of connecting rod 11. Material from line 16is directed'to cylinder '94 and 95, the line 95 being provided withshutoff valve 96 operable through rod 91 by movement of connecting rod83.

The material forced from cylinder 13 is directed through line 98, header99, flexible tubing 12 and nozzle 44. Line 98 is provided with checkvalve I66, preferably of the suction type. Material forced from cylinder14 is directed through line I6I, header 99, flexible tubing 12 andnozzle 44. Line I6I, like line 98, is provided with a check valve I62,also of the suction type.

Check valves I66 and I62 are operated through suction caused by intakemovement of their respective'pistons and thus serve to close theirrespective lines in the direction from the nozzle to the piston. Thesuction exerted in closing each of the valves, however, is reflectedthroughout the discharge line and thus at the discharge end 43 of nozzle44, by which dripping of material from nozzle 44, between filling of thecartons, is prevented.

As shown in Figure 2 and more in detail in Figures '7, 8 and 9, clutchassembly 69 comprises drive wheel I63 and clutch disk I64. Drive wheelI63 is rigidly secured, as by pin I66, to shaft 56 and is mountedadjacent sleeve bearing 65. Drive wheel I63 is radially flanged as atI61 to provide shoulder I68 and at its peripheral edge is provided withcam surface I69 thus providing shoulder II6. As seen in Figure 8, flangeI61 rotates relative 'to the outer periphery of sleeve 65.

Sprocket 68 is rigidly secured, as by bolts III, to clutch disk I64.Sprocket 68 and clutch disk I64 are secured on shaft 56 as by collar H2and pin H3 and are free to rotate on shaft 56 except when in drivingengagement with drive wheel to provide rod I22. Rod I22 is slidablymounted [03. As seen in Figures 8 and 9, clutch disk m is radiallyflanged, as at II4, to provide cam surface II5. Flange H4 is adapted forrotation relative to the outer periphery of drive wheel I03.

, In operation, clutch disk I04 is normally maintained-in drivingengagement with drive wheel I03 by pawl I I6 normally pivotally urged bythe action of spring III against shoulder IIO of drive wheel I03. 'Inthe event, however, a carton fails to feed to a pocket of the turret, itis desired to prevent discharge of material from the nozzle when and asthe empty pocket is moved relative to the nozzle. This is accomplishedby momentarily releasing pawl II6 from against shoulder IIO of drivewheel I03 whereby clutch disk I04 and sprocket 68 will be free to rotateone complete revolution without driving the shaft 56.

The mechanism for releasing pawl IIB comprises guard member H8 andclutch throwout member II9.

As shown in Figure 2, guard member H0 is formed integral with rod I20,bent as at IZI,

for longitudinal movement in bracket I23 rigidly secured to frame member6 and bracket I24 rigidly secured to frame member I. Rod' I22 is bent,as at I25, to provide rod I28. The free end I271 of rod I26 pressesagainst face I28 of clutch member He and serves to urge clutch member H9in a direction toward clutch disk I 04 when guard member- II8 is movedinto an empty pocket of the turret.

Guard member H0 is normally urged against the periphery of turret II andthus for movement within an empty pocket of turret II by pressure ofcoiled spring I29 secured on rod I22 against bracket I23. The tension ofspring I29 may be regulated by collar I30 rigidly secured on rod I22.

It will be seen that the clutch member H9 is adapted for longitudinalmovement on sleeve 65 within the limits defined by slot I3I and pin I32.The movement of clutch member IIQ toward clutch disk IM, as by theaction of rod I2t and spring I29, may be augmented by the action orspring I33 and arm I36 pivotally secured to rigid bracket I35. The freeend I of arm it is maintained in constant contact with face I23 ofclutch member. IIt at a point relatively opposite to the point ofcontact of free end I23 of rod lit.

The tension of spring I333 should be of itself insufficient to urgeclutch member II 9 in the direction toward clutch disk IIMI. Spring I33is, in fact, a balance spring, the tension of which, when combined withthe tension of spring I29 when that spring is brought into play, willserve to quickly move clutch member lit in equilibrium in the directiontoward clutch disk me.

As shown in Figures 2 and I, clutch member I19 is radially flanged as atIt? to provide radial cam surface I 39 and shoulder I38. An axial camsurface IMI is also provided on the peripheral surface of radial flangeI3'I. In the operation of the devicehereinafter described, it will beseen that when clutch member IE9 is pressed to its forwardmost positiontoward clutch disk It, axial cam I is made to contact with knob II ofpawl Ilb whereby pawl H8 is disengaged from shoulder III] of drive wheelI03, and thus the clutch disk I04 and sprocket 68 made free to rotate ondrive shaft 56. .It will also be seen that after one revolution ofsprocket 68 on drive shaft 56, radial cam I39 will he made to contactradial cam Ht whereby clutch member 9 will be thrown to its retractedposition away from clutch disk I04.

In operation, pawl H6 is normally urged by spring III against shoulderIIO of drive wheel I03 thus completing the connection between drivesprocket 68 and shaft 56 by which to rotate the several cams 62, 82 and00.

In the event a carton fails to feed to a pocket of turret II, guardmember 8, through action of spring I29, will move within the emptypocket and through rods I20, I22 and I26 will press clutch member 9 inthedirection toward rotating drive wheel I03 and clutch disk I04. Drivewheel I03 'will continue to rotate until shoulder I08 of the drive wheelI02 is mated with shoulder I38 of clutch member II9 whence clutch member9 will be free to move to its forwardmost position toward clutch diskI04. When clutch member H9 is moved to its forwardmost position, knob Iof pawl II6 will ride against axial cam I40 of clutch member II9-andthus raise pawl 6 out of engaging position with drive wheel I03.

When the pawl H6 is released from engaging position with drive wheelI03, clutch disk I04 and sition relative to the nozzle 45. I The nextmove-- ment of the turret will return guard member I I8 against theouter periphery of the turret and thereby release the pressure of springI29 against I clutch member I I 9.

I/ Also radial cam II I will strike -against radial cam I39 and thusthrow clutch member I III to its retracted position away from clutchdisk IMI, whence pawl IIt will be free to re-engage shoulder I I0 ofdrive wheel I03 and again-complete the connection between clutch diskIIIII and drive wheel I93.

It will be seen that the several features exemplified in the'presentinvention are made to opcrate in synchronism with one another and thatin the event a carton fails to feed to a pocket oi. the turret I I,operation of the material discharge mechanism and the nozzle operatingmechanism are discontinued one complete movement without interruption tothe operation of the turret and carton feeding mechanism.

It will be understood that changes may be made in the structure of theapparatus shown in the drawings without departing from the spirit of theinvention as described in the claims which follow.

I claim:

1. In a filling machine, the combination of a nozzle for the dischargeof material, a rotatable turret having carton receiving pockets normallysupplied with cartons intermittently movable relative to the nozzle andmeans for lowering the 'nozzle toward each carton when fed by theturtively connected with the nozzle and with a reciprocally movable rodprovided at one end with a slot and spaced roller bearings, a driveshaft slidably mounting the rod through the slot and a cam. rigidlysecured to the shaft and engage- 5 able with the spaced bearings. I IALEXAND ER BURNETT.

